Otto Heinrich Warburg Quote
Physics brings the ferment bands into existence but organic chemistry is necessary for the identification or creation of these bands.... Indeed, the ferment substance - though being so near to us - is, like the substance of the stars, inaccessible for us.
Nobel Lectures, Physiology or Medicine 1922-1941, The Oxygen-Transferring Ferment of Respiration, Elsevier Publishing Co. Amsterdam, The Netherlands. 1967